Machine for scouring and hulling grain



J. N. TREADWELL- v sgouring'and Hu-Iling Machine.

No 23,127. Patented-March 1,1859.

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UNITED STATES PATENT ()FFICE.

JOSEPH N. TREADVVELL, OF READING, CONNECTICUT.

MACHINE FOB SCOUR-ING- AND HULLING GRAIN.

Specification of Letters Patent No. 23,127, dated March 1, 1859.

To all whom it may concern:

Be it known that I, JOSEPH N. TREADWELL, of Reading, in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Scouring and Hulling Grains of Any Kind; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying draw.- ings, making a part of this specification, in which Figure 1 represents a vertical section through the scouring and hulling mill. Fig. 2 represents a perspective view of the run ner and its spindle, showing the grooves and rasp upon its face. Fig. 3 represents a per spective view of the same runner and spindle, turned over to show the grooves on its under or lower face. Fig. 4 represents in perspective the bed, or stationary stone or disk, turned over, to show the grooves and rasp on its working face.

Similar letters of reference where they occur in the separate figures, denote like part-s in all the drawings.

The nature of my invention consists in providing the working faces, of a bed and runner, with grooves throughout a portion of their surfaces, and skirted with rasps, as will be explained.

To enable others skilled in the art to make and use my invention, I will proceed to de scribe the same with reference to the drawings.

A, represents a stout substantial frame, upon which is arranged the curb B.

C, is a bridge-tree upon which a step a, is placed to support the lower end of the spindle D, the upper end of said spindle be ing sup-ported in a suitable box or bearing Z), in the top bridge-tree, or frame piece E. Upon this spindle D, is affixed the runner F, so as to run within, and near the bottom of, the curb B.

The runner (as well as the bed Gr), may be made of iron, stone, or parts of each, or of any other material of which mill stones are ordinarily made, due regard being had to the special work to be done by them.

The face of the runner F, is'provided with grooves c, radially arranged, the outer ends (Z, of said grooves being closed. The skirt of the runner, outside of these grooves, is furnished with an iron or steel rings, or segments of rings, H, having a. roughened or rasped surface, which surface should be slightly below the surface of the grooved portion, and this ring or rasp, may be made adjustable, so as to fit it to the surface of the stone should it become worn. It should also be removable for repair. The object of the grooves is to scour, and the rasps to hull, or finish the operation.

The bed stone G (Fig. 4) is furnished with concentric grooves c, on its inner portion, and a rasp I, on its skirt, like that H, of the runner, in all its essential properties.

The grain to be operated upon is fed in at the eye f, and as it is slowly carried toward the skirt of the runner, is scoured and hulled, and dropping 0E or over said skirt falls into the curb B. There is an opening 2', through the curb, and the bottom of the runner F, may be furnished with radial or eccentric grooves or wings, to move the material around to the delivery 2'.

It is obvious that either stone may be the runner without affecting the principle of the operation, and should the runner require balancing, holes or recesses '21 may be left in them, into which lead or any other heavy material may be put, to effect that object. Rice, buckwheat, or any other grain, may be thus treated.

Having thus fully described the nature and object of my invention what I claim therein as new and desire to secure by Letters Patent is In combination with a bed stone and runner for scouring and hulling grain, the grooves c, e, and rasping plates H, I,-skirting said grooves, said parts being arranged, and operating together substantially as, and for the purpose, herein set forth.

JOSEPH N. TREADWVELL.

WVitnesses: I

- A. B. STOUGHTON,

C. COHEN. 

